[swift-evolution] proposal for a even simpler guard.. => guard!

David Waite david at alkaline-solutions.com
Mon May 2 14:57:29 CDT 2016

By existing semantics of the exclamation mark, ‘guard!' would be expected to cause the application to fail fatally, not throw. This is the same as try!.


> On May 2, 2016, at 1:09 PM, Dominik Pich via swift-evolution <swift-evolution at swift.org> wrote:
> Hello,
> often the guard statement is used to only unwrap optionals. multiple guards will cause a lot of ‘overhead’.
> also often if it doesn’t work. there is no easy way we can gracefully recover ;)
> so how about we do the same as with try/catch where you can use try! and have a guard!
> the guard! could just throw an exception …
> regards
> Dominik
> _______________________________________________
> swift-evolution mailing list
> swift-evolution at swift.org
> https://lists.swift.org/mailman/listinfo/swift-evolution

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.swift.org/pipermail/swift-evolution/attachments/20160502/36ad57ba/attachment.html>

More information about the swift-evolution mailing list